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The Organic Content of Recent Rhyolitic Ashes in Malaya

Published online by Cambridge University Press:  01 May 2009

K. P. Oakley
K. P. Oakley
Affiliation:
Dept. of Geology, British Museum (Nat. Hist.)
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Extract

A series of Recent volcanic ashes and tuffs from various parts of Malaya has been examined on behalf of the Director of the Geological Survey, F.M.S., in order to test the reported occurrence of marine sponge spicules in certain of these deposits (cf. J. B. Scrivenor, 1930, A Recent Rhyolite-ash with Sponge-spicules and Diatoms in Malaya, Geol. Mag., lxvii, 385–393, pls. xxii, xxiii). If such an occurrence were confirmed it might be taken as evidence of very considerable changes in sea-level within recent times, since at one locality the deposits yielding the supposed spicules reach an elevation of 500 feet above M.S.L. (see Willbourn, Rep. Geol. Surv. Dept. F.M.S. for 1937 (1938), PP. 8–10).

Type
Articles
Information
Geological Magazine , Volume 77 , Issue 4 , August 1940 , pp. 289 - 294
Copyright
Copyright © Cambridge University Press 1940

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